Improvement in the manufacture of horseshoe-nails



' 1^. c. PAIGE.

Manufacture of Horseshoe Nails. No. 162,506. PatentedseptemberzJs,

JOHN o. rAiGn, on sronnnAM, MASSACHUSETTS.

IMPRCVEMENT EN THE ANUFACTURE OF HQRSESHQENILS.

Specification forming part of Letters Patent No.l 142,506, datedSeptember 2, 1873 application filed y July 24, 1873.

To all whom it may concern:

Be it known that I, JOHN C. PAren, of Stone ham, in the county ofMiddlesex and State of Massachusetts, have invented an Improve ment inthe Manufacture of Horseshoe-Nails; and I do hereby declare that thefollowing, taken in connection with the drawings which accompany andform part of this specification, is a description of my inventionsuflicient to enable those skilledin the artto practice it.

In punching, from rolled plates, blanks for horseshoe-nails, andespecially by the method shown in United States Letters Patent No.128,045, dated March 26, ,1872, it is customary to cut up all of theplate Without Waste, eX- cept at opposite ends oi' each row, the platebeing divided, `as seen by the lines upon the diagram in Figure 5 ofsaid patent. This method, though seemingly perfect, is lieverthelessproductive of imperfect results, the difculty arising from the factthat, in punchin gblanks in succession, the heads of part of the blanks,by reason of having no supporting metal upon one side of them, and being sheared off at the opposite sides by the action of the punches, have acant given to them, which causes one edge to be cut on an angle insteadof by a square cut through the metal.'

To obviate this defect, I change the form oi" the punch, and theconsequent head of the blank stamped by it from the plate, in suchmanner that, although the Shanks are divided on the lines to form theadjacent edges of adjacent blanks, the head of each blank is severedfrom the plate so as to leave metal on opposite sides of each head, suchmetal resisting the action of the punch equally on both sides, andthereby insuring a square cut at each side edge of the head. I eliectthis result by making the nail-blank with rounded corners instead ofwith square corners, or in such manner as to leave a connecting-finattach ed to the plate as the blanks are punched, and remaining betweenadj acent blanks, which fin resists the action of the punch equally uponboth sides, blank.

and insures a perfectly-formed My invention consists in this method ofsup porting the opposite edges of the blank-heads during the punchingoperation.

'The drawing represents a portion of a plate, from parts of which blankshave been punched.

' a denotes the webs or shank-forming portions of the plate 5 b, thethickeror head-forming portions thereof. c and d denote two shanks, atthe respective opposite sides of which blanks have already been punchedfrom the plate. At the point end of these shanks they are shown asuniting to iin projections e from a bar, f, and the punches are soformed as to leave this bar and these uniting pieces, connecting eachblank to the plate as a blank is removed at its side, the cut thatsevers any head severing such head not directly from the `next head, butfrom the intervenin g piece. Between the opposite heads the punches takeall the metal, the web portion of eachsection simply forming adjacentshanks, andbeing all utilized in such forma'- tion, while at the headsthe iin portions are left. This necessitates a greater cutting action ofthe punch, as in cutting out the head g the punch has to ent on the linex, Whereas, in the old method, there would be only an open 'space beyondthe outer line ofthe punch; but the formation of the squarely-cut headmore than counterbalances the labor required to out on both sides of thehead, besides which the punch has, in the old method, to out on bothsides at once in one operation, and ot" course has the same powerapplied for the next operation, although the punch in fact only cuts atone side ofthe head.

'lhc resisting-iin is form ed by cutting the h cad rounding at thecorners h, (as 'seen in Fig. 1 and at A, which shows an enlarged viewot' the head,) instead of square, as shown at E.

rIlie improvement in punching horseshoen ail blanks, substantially .asdescribed.

JOHN C. PAIGE.

Witnesses:

FRANCIS GoULD, M. W. FRornmGHAiu.

